Home / 20,103.30-30,122.13-19,335.42

Finding the Fourth Proportional to 20,103.30, 30,122.13 and 19,335.42

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Solution

The fourth proportional to 20,103.30, 30,122.13 and 19,335.42 is: 28,971.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,103.30 : 30,122.13 = 19,335.42 : x
  2. Step 2: Convert to fraction form
    20,103.30/30,122.13 = 19,335.42/x
  3. Step 3: Cross multiply
    20,103.30x = 30,122.13 × 19,335.42
  4. Step 4: Simplify right side
    20,103.30x = 582,424,034.84
  5. Step 5: Solve for x
    x = 582,424,034.84/20,103.30
  6. Step 6: Final answer
    x = 28,971.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.